Home / 20,262.25-30,372.30-8,422.47

Finding the Fourth Proportional to 20,262.25, 30,372.30 and 8,422.47

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Solution

The fourth proportional to 20,262.25, 30,372.30 and 8,422.47 is: 12,624.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,262.25 : 30,372.30 = 8,422.47 : x
  2. Step 2: Convert to fraction form
    20,262.25/30,372.30 = 8,422.47/x
  3. Step 3: Cross multiply
    20,262.25x = 30,372.30 × 8,422.47
  4. Step 4: Simplify right side
    20,262.25x = 255,809,785.58
  5. Step 5: Solve for x
    x = 255,809,785.58/20,262.25
  6. Step 6: Final answer
    x = 12,624.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.